Genetic Enhancement of Blast and Bacterial Leaf Blight Resistance in Rice Variety CO 51 through Marker-Assisted Selection-Reference-Cited by-同舟云学术

Genetic Enhancement of Blast and Bacterial Leaf Blight Resistance in Rice Variety CO 51 through Marker-Assisted Selection

Published:2024-04-28 Issue:5 Volume:14 Page:693
ISSN:2077-0472
Container-title:Agriculture
language:en
Short-container-title:Agriculture

Author:

Subburaj Samuthirapandi¹^ORCID,Thulasinathan Thiyagarajan²,Sakthivel Viswabharathy¹,Ayyenar Bharathi²^ORCID,Kambale Rohit²,Rajagopalan Veera Ranjani²^ORCID,Manickam Sudha²,Rajasekaran Raghu²,Chellappan Gopalakrishnan³,Thiyagarajan Kalaimagal¹,Swaminathan Manonmani³,Muthurajan Raveendran²^ORCID

Affiliation:

1. Department of Genetics and Plant Breeding, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India

2. Department of Plant Biotechnology, Centre for Plant Molecular Biology and Biotechnology, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India

3. Department of Rice, Centre for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore 641 003, Tamil Nadu, India

Abstract

The increased use of chemicals in rice farming poses significant issues regarding the emergence of pesticide/fungicide resistance and environmental sustainability concerns. This study was aimed at the genetic improvement of blast, bacterial leaf blight (BB) and gall midge resistance in a popular rice variety CO 51 which already harbours a blast resistance gene Pi54. Efforts were made to pyramid an additional blast resistance gene Pi9 along with two BB resistance genes (xa13 and Xa21) and two gall midge resistance genes (Gm1 and Gm4) into an elite rice variety CO 51 to enhance the resistance level to biotic stresses. The superior lines were selected using functional markers conferring resistance to blast (NBS4 and Pi54MAS linked to Pi9 and Pi54 genes, respectively) and BB [(xa13Prom (xa13) and pTA248 (Xa21)] and SSR markers linked to Gm1 (RM1328) and Gm4 (RM22550) for phenotypic screening and agronomic evaluation. The genotyping and phenotyping of F6 and BC2F6 progenies of CO 51 X 562-4, for agronomic traits and resistance to BB and blast, identified ten superior progenies in F6 and five superior progenies in BC2F6. The breeding lines harbouring both xa13+Xa21 exhibited high levels of resistance to BB (score ≤ 1 cm) and Pi9+Pi54 exhibited strong resistance to blast (score ≤ 2). Identified lines can be evaluated further for varietal improvement or utilised as genetic stocks in breeding programs.

Funder

Department of Biotechnology

Department of Biotechnology-Junior Research Fellowship Programme

Publisher

MDPI AG

Link

https://www.mdpi.com/2077-0472/14/5/693/pdf

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